package com.cskaoyan.service;

/**
 * @author stone
 * @date 2022/12/21 09:48
 */
public interface UserService {

    public void sayHello();

    public void sayHello(String name);

    public void sayGoodBye(String name);

    public String sayGoodBye(String from,String dest);

    public void executeError();
}
